Great tubes, but expensive. Debatable whether they're worth it unless you've got extra money laying around.

Have had for a month or two and no problems at all . You can definitely feel the difference.

Super light tube and durable

These are noticeably lighter than normal tubes, and they do seem durable as well. I have cased on a curb a few times hard enough that I would likely get a flat with a normal tube, but didn't with these. One thing to note is that the valve stems are bright orange like the tubes themselves. I think it looks kind of cool, but if your bike has a really specific color scheme, these might clash with that if that's the kind of thing you care about.